Portable cooler



FIG. 1 is a front view of the invention.

FIG. 2 is a rear view.

FIG. 3 is a left side view.

FIG. 4 is a right side view.

FIG. 5 is a top view.

FIG. 6 is a bottom view; and,

FIG. 7 is a perspective view. 

The ornamental design for a portable cooler, as shown. 